Apparatus for cooling systems



E. TAUER APPARATUS FOR COOLING SYSTEMS NOV. 30, 1937.

Filed sept. s, 193e 2 Sheets-Sheet l Nov. 30, 1937. E. TAur-:FfA

MPARA'TLJSl FOR COOLING SYSTEMS Filed sept. a, 1936 INVENTOF?- .50u/,4,90 720i/Q ATTORNEYS Patented No. 30,1931

.UNITI-:Dl- STATE PATENT i oFFicr.;

I amasar APPARATUS Fort coorJNG' SYSTEM Edward Tadel',- Bellerosc, N. Y. Application September 8, 1936, Serial No. $19,832 (c1. a2-12s) 8 Claims.

This invention relates to a cooling system adapted more particularly for" air conditioning. An object of the invention is the utilizationof the vapor pressure produced by the evaporation Vo a refrigerating medium evaporating at rela-` tively low temperatures to perform a number of With these and other objects in view an im.

heat absorber for a cooling system having an.

expansible and collapsible casing into which the rerigerating medium is introduced and in which it is vaporized. l v

Another feature of the invention relatesVv to an evaporator having a casing which is expansible 'by the pressure of the vapors produced from the evaporation of the refrigerating medium.

Another feature of the invention relates to an evaporator having a casing divided into expansibleL and collapsible compartments with provision for introducing the refrigerating medium mostly in liquid form into the compartments alternately and passing the vaporsl alternatelydnto cylinders.

Another feature of the invention relates "tof-fan v L evaporator having an expansible and collapsible casing with provisions for squeezing out the water or condensation which may have collected onthe outer surfaces from thesurrounding air, during each collapse of the casing thereby increasing the eiectiveness of dehumidiflcation. .e

Further features and advantages will become apparent from the' following description and claims when taken in' connection with the accompanying drawings in which:

Figure 1 is a sectional yiewof one unit 0L. my improved heat absorber.

Figure 2 is a section oni-the ure 1.

Figure 3 is asection on the line 3--3 of Figure 1.

of the connections for the expansion plates or rings.

Before describing the apparatus in detail it may-b pointed out that the -system is primarily designed for airconditioning and refrigeration 5- but where extremely low temperatures are, not

, required.

The refrigerant used may be any of the well known varieties although I prefer to usev a re` frigerating medium sold under the trade name 1,0 of Freonn u V v l I The heat absorbers to bedescribed may be used in multiple units depending. on the capacity required and may therefore 'bemade in standard sizes. l

Referring to Figure 1 the reference character i S designates generally a heat absorber constituting one unit of my system. The refrigerating medium" is conducted from a suitable receiver along a pipe 2 'to a distributing pipe 3 and entersthe 20 heat absorber at either endv thereof under control of an upper fvalve 4 and a lower valve 6. Springs' normally tend to hold the valves in closed position but they are alternately opened for the admission'- of the liquid refrigerant and 25 held open for a deilnite time interval. The re- .f irigerant isled from the distributing pipe 3 to an outlet lll located at each end of the heat absorber from which it passes to a circular conduit l'fg'wandethrough a. series of holes Il in a plate y30 iii-there being one of these plates at each endo'ftthe' heat absorber connected by rods l8i'orm ing the supporting framework.

Evaporation takes placein a bellows-'like casing formed by joining the outer and inner edges 35 of a. series of plates or rings 20,' Figure 5, the upper i and lower lportions of vwhich casing may altera Figure 4is a detail on an enlarged scale'show- 50 ing the collapsed condition of the casing, such condition being shown in the lower portion ofl Figure 1.

panded.

Figure 6 is an elevational view in detail of onel nately expand and collapse. 'A plate l9 'isc'onnected to the casing midway thereof and serves I to divide the casing into two compartments. rIhe. '40 plate IS/is suitably apertured -and is guided'by the rods I8. The plates or rings 21) are joined at their inner and outer edges Y by U-shaped members 2l as 'shown in Figures 5 and 6, each of these members beingy provided with corrugations '46 at' their upper and lower faces i'or a purpose to be later referred to. Extending outwardly 'from the inner members 2| and extending inwardly from. the outside members 2l `are a plurality ofv fins 22 which fins act to increase the heat absorb- 60 ing capacity of the casing.l

In Figure l the lower compartment of the cas- .ing isshown in its collapsed state at which time `the plates 20 lie -substantially parallel as indit permits the spring lto closesaid valve.

oi' the cylinder of the other compartment.

located in an insulated chamber and the air to be cooled may be forced in contact therewithl by means of a fan operated by a motor. As

evaporation of the "refrigerant proceeds ata rapid pace, pressure of the resulting vapors act-l ing upon the plate I9. tend to move the same upwardly to collapse the upper compartment of the bellows-like casing, as the lower ompartment is being expandedtby the.evaporated re,

.frigerant Withinthe casing is a lower cylinder' 26 and upper cylinder 28 there being suiiicient clearance f between vthe cylinder Walls and the.inner mem-v bers 2| of thecasing to permit the entry ofthe refrigerant into the casing. The refrigerant may also enter between the plates by reason of thel corrugated surfaces of the inner members 2|. A piston connected to the plate I9 extends on either side of said plate and into the cyl-` inders 26 and 28. In the position shown lin Figuref 1 thel upper piston head is lin the lower portion ofthe cylinder 28 while the lower piston head is in the lowerportion of cylinder 26.

As the lower compartment of the casing expands, it tends to move the piston upwardly in the cylinder 28.. `Any vapors vwithin the upper l compartment are by-passed through ports Y"3| in the piston, said ports leading from the upper compartment through the plate I9 and through the piston 30 beneath the lower head thereof and similar ports 9| lead from the lower compart.

'I In the position of the parts as shownin Figure 1, the valve 6 is in the open position land remains open for a substantial part of the stroke of the piston so that ,pressureton the plate I9 is maintained.

'I'his plate also carries two rods 99 projecting from opposite sides thereof and a spring 34 surroundsv each rod. The tension of each spring may be adjusted through the usual lock-nut devices.

As the pme ls with the piston :n readies.

substantially the end of its stroke in the upward direction, the end ofthe rod 33 having moved away from' an arm 36 on the valve 6 'I'he rod 93 on the upper side of the plate |9 con-l tacts the arm 96 of the valve 4 and when the spring 34 has been suiiiciently compressed the -valve 6 is opened andthe refrigerant is permitted to enter the upper compartment of the casing.

It will be obvious that the vapor which has been used in expanding one compartment of the casing is passed in advance of the piston head In other words the cylinder 28 at the stage shown in Figure 1 will be full of vapor. As the piston .moves upwardly in the cylinder 26 the vapor is ejected from the cylinder through the ports ll in a plate 29, these ports being normally closed by a valve l0 held in its seat by a spring ,4| of suitable tension, to permit the valve to open at theproper time. From the, ports '39 'the gases pass to an outlet 39a. l f

Referring now to the dehumidifying features a,1oo,sss t" f of the invention it winbe noted that when one' section of the casing is in its expanded-condition, the outwardly projecting ns 22 (Figure 5) are exposed to theA air of the chamber in which the heat absorber is located. and moisture present in this air will be condensedon the outside of the plates 20 and on both sides of the external ns 22. When, however, this SectionV cf the casing is in collapsed condition the condensed moisture if in sufficient quantity will be squeezed out and pass. through the corrugations in the members 2|. In this way the moisture is more readily" removed from the surfaces upon which' it has been condensed leaving these surfaces in condition to more effectively receive additional condensations. n Y

With the construction above described the heat absorption from the air space surrounding the heat absorber increases as the casingl expands so that the evaporation israpid. On the other hand as the refrigerant is evaporated in either compartment of the casing the vapors -resulting from such evaporation are passed to a region less exposed to the heated air. In other Words as each compartment of the casing collapses the vapors contained therein are passed to the cylinders 26 and 28 alternately. During the collapsed condition,'thereforc, the cylinder is more -or less insulated from the loutside air.

'I'he inner fins 22 not .only act as heat absorbers but they take up space within the bellows-like casing and decrease the volume thereof so that the capacity of each compartment of the casing is substantially the same or less than thel capacity'of the cylinders 26 and 28. This permits the effective area of the plate I9 to be greater than fthe area of the -pistonheads Since each absorber is placed in a vertical position the weight of the plate 9.` piston and other associated movable parts are counter-poised throughmeans of cables54 attached to the plate i9 which cables pass over pulleys 55 and to the other end of which weights. 5B are attached.

'I'he heat absorber above described may be used in pla'cey of the usual evaporator coil in coolingsystems at present in use and the conduits 39a at the upperand lower ends of the heat absorber y'may be connected to the usual compressorand thencev pass to the usual'condenser.

What I`claim is:

1. A device of the class described comprising a pair of expansible and collapsible compartments,and means for` introducing a refrigerating medium into said compartments alternately. 2. A device of the class described comprising a collapsible casing, 4a plate separating said casing into two compartments, a cylinder within each compartment vof said casing, and a piston common to both cylinders.

3. An evaporatorhaving an expansible and' fr igerating medium to entere'ach compartment alternately;

5. A device of the class describedhavlng an expansible and collapsible casing, said casing on its expansion presented an increasing area for the condensation oi atmospheric moisture, said casing acting on its collapsing movement to expel the condensed water.

6. A device of the class described having an expansible and collapsible casing, a plate separating said casing into two compartments, a cylinder within each compartment of said casing, and a piston connected to said plate and common to both cylinders, said-plate being movable to expand and collapse the casing.

A'1. A heat absorber for a -cooling system, said absorber having a casing with alternately expansible and collapsible compartments, means for introducing a reirigeratlncmedinm into the collapsed compartment to `thereby expand said compartment and collapse the .other compartment.`

8.- A heat absorber having an expansible and collapsible casing, a plate connected to the casing and separating it into two compartments,. a cylinder within each compartment of the casing. a piston connected to said plate and common to both cylinders. means for introducing a refrlgerating medium into a collapsed compartment to expand the same, and means for passing' the gases from the expanded compartment into the cylinder of the collapsed compartment during the expansion of the expanding compartment.

EDWARD 'r'.surza.

absorber'for a cooling systgm.. saidV 

